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Stainless steel carbine buffer spring manufactured to MIL-S-1357 specification for replacement on rifles with M4-type receiver extension tube for collapsible carbine buttstock. Replace a fatigued spring, or use as part of the rifle-to-carbine stock conversion. Cold drawn to ASTM A313 standard for heat- and corrosion-resistance, and case hardened for improved resistance to surface wear.
SPECS:
631 stainless steel. Fits AR-15/M16 rifles chambered in .223/5.56mm with M4-type receiver extension for collapsible buttstock.
Catalog page 25
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$5.29
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